Year	Percent
1950	10.88956
1955	10.33893
1960	10.69672
1965	13.60461
1970	13.37589
1975	13.14994
1980	13.03714
1985	13.40887
1990	13.76858
1995	13.67508
2000	12.81902
2005	11.83835
2010	11.42603
2015	12.78291
2020	12.65385
2025	10.25359
2030	9.05612
2035	8.45398
2040	8.04219
2045	7.74873
2050	7.41191
2055	6.90894
2060	6.40276
2065	6.0084
2070	5.75266
2075	5.57751
2080	5.4156
2085	5.23937
2090	5.06418
2095	4.91984
2100	4.82933